With a low-profile Flat Mount design, the SHIMANO GRX BR-RX400 hydraulic disc brakes provide greater control for mixed terrain riding.

• Never hesitate to tackle rough surfaces
• Excellent heat dissipation
• ICE TECHNOLOGIES
• Flat mount
• Simple set up and maintenance
• Convenient tool access
• Easy hose joint system (J-kit)
• Simple wheel replacement
• Easy and clean bleeding system
• ONE WAY BLEEDING